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// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import 'dart:io' show Directory, Process, ProcessResult;
import 'package:testing/testing.dart' show Chain, TestDescription;
Stream<TestDescription> filterList(
Chain suite, bool onlyInGit, Stream<TestDescription> base) async* {
Set<Uri>? gitFiles;
if (onlyInGit) {
gitFiles = await getGitFiles(suite.uri);
await for (TestDescription description in base) {
if (onlyInGit && !gitFiles!.contains(description.uri)) {
yield description;
Future<Set<Uri>> getGitFiles(Uri uri) async {
ProcessResult result = await"git", ["ls-files", "."],
workingDirectory: new Directory.fromUri(uri).absolute.path,
runInShell: true);
if (result.exitCode != 0) {
throw "Git returned non-zero error code (${result.exitCode}):\n\n"
"stdout: ${result.stdout}\n\n"
"stderr: ${result.stderr}";
String stdout = result.stdout;
return stdout
.split(new RegExp('^', multiLine: true))
.map((line) => uri.resolve(line.trimRight()))
void checkEnvironment(
Map<String, String> environment, Set<String> knownEnvironmentKeys) {
Set<String> environmentKeys = environment.keys.toSet();
if (environmentKeys.isNotEmpty) {
throw "Unknown environment(s) given:"
"\n - ${environmentKeys.join("\n- ")}\n"
"Knows about these environment(s):"
"\n - ${knownEnvironmentKeys.join("\n - ")}";